John Trapp on Proverbs 18:20

Verſ. 20. A mans belly ſhall bee ſatisfied with the fruit of his mouth] See the Notes on Chap. 12.14. and 13.2.

And with the encreaſe of his lips ſhall hee bee ſatisfied] It is worthy the obſerving, ſaith an Interpreter here, that Salomon doth vary his words: Hee ſpeaketh ſometimes of the mouth, ſometimes of the lips, ſometimes of the tongue, as verſ. 21. to ſhew that all the inſtruments or means of ſpeech ſhall have, as it were, their proper and juſt reward.